Analysis on the development of the most popular si

Development status of single screw plastic extruders at home and abroad (1) analysis of thermal insulation materials

in the Chinese market, single screw plastic extruders occupy a great development advantage. It has the characteristics of simple structure, durability, convenient maintenance, low price, easy operation and so on. In this continuous development process, the technology is also upgrading and developing towards high quality, high efficiency, multi-function and so on

China has the ability of independent research and development

when twin-screw extruder is used for glass fiber reinforced mixing, if the glass fiber content exceeds 45%, the processing will become quite difficult. The magnetic particle content of magnetic materials is usually as high as 60% - 70%, sometimes even more than 90%. It is almost impossible to process and granulate magnetic materials with ordinary extruder

through the joint efforts of the technology and R & D personnel in the industry, some major special machines, such as exhaust extruder, series disc screw extruder, reciprocating pin screw extruder, foaming extruder, extruder with melt gear pump, series multi-stage extruder, planetary screw extruder, etc., are produced by domestic manufacturers, with the ability of independent research and development, and enjoy independent intellectual property rights

some domestic manufacturers and research institutes have carefully developed independently designed grinding plate extruders according to the needs of domestic magnetic materials and other high filling materials. Typical examples are Beijing Fengji and Beijing University of chemical technology. The grinding plate extruder can adjust the combination of grinding plates to adapt to the extrusion processing of different high filling materials, such as glass fiber reinforcement, magnetic plastics, conductive materials, new ceramics and other materials

reciprocating screw plastic extruder has become a popular product in the domestic market in recent years, and has also become a landmark product for different manufacturers to show their technical strength. The biggest feature of reciprocating single screw extruder is to realize high filling processing of different materials. When used in the processing of glass fiber reinforced materials, the addition of glass fiber can reach more than 50%

equipping the plastic extruder with new screw, barrel structure and exhaust system is also an effective means to improve efficiency and reduce energy consumption. For example, there was a statistically significant difference in the success rate of filling and repairing teeth with three different materials (0.05); The main reasons for filling failure of P60 composite resin group, glass ionomer group and amalgam group are pulpal disease, filling wear and filling fall off. The use of low shear screw with higher length diameter ratio, slotting barrel and more efficient exhaust system are all effective means

the twin-screw extruder designed by Barton Phil Cincinnati fully embodies the characteristics of high energy efficiency. For example, twinex offers four extruder models from 78mm to 135mm. Compared with other counter rotating twin-screw extruders, the specific energy input of twinex is about 15% lower, and the output is increased at the same time

this is achieved by lengthening the machining unit to 34l/d and combining the reduction of heat loss. The main design features include fully insulated barrel, intelligent APC barrel air cooling (strong air cooling system), intracool screw core temperature regulation system and optimized screw design

in addition to plastic extruders, the continuous development and progress of downstream equipment is also crucial to the improvement of profile extrusion performance. Barton Phil Cincinnati not only designs and manufactures downstream equipment, but also cooperates exclusively with Gruber extrusion technologies on engineering projects. These two professional extrusion technology companies jointly provide a complete set of window profile extrusion production lines with high production capacity and high energy efficiency, which Mr. Chen is very optimistic about

Gruber extrusion technology has recently developed an energy-saving vacuum system, which is characterized by a more efficient dry vacuum shaping and a vacuum box with a variable vacuum control system. Compared with the traditional system, the sizing table with energy-saving vacuum system can reduce energy consumption by 50%

conclusion: China's single screw plastic extruder market still needs the pressure of rising raw material costs and energy costs, so that energy conservation and material saving have become the focus of the extrusion processing industry. At the same time, extrusion technology suppliers have developed rich energy-saving schemes from various angles to meet the energy-saving needs of users to the greatest extent

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